package com.myblog.myblog.controller.admin;

import com.myblog.myblog.poge.Tag;
import com.myblog.myblog.service.TagService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

@Controller
@RequestMapping("/admin")
public class TagController {
    @Autowired
    private TagService tagService;

    @GetMapping("/tags")
    public String admintags(@PageableDefault(size = 10,sort = {"id"},direction = Sort.Direction.DESC)
                                        Pageable pageable, Model model){
        model.addAttribute("page",tagService.listTag(pageable));
        return "admin/admintags";
    }

    @GetMapping("/tags/input")
    public String input(Model model){
        model.addAttribute("tag",new Tag());
        return "admin/tags_input";
    }
    @GetMapping("/tags/{id}/input")
    public String edit(@PathVariable Long id, Model model){
        model.addAttribute("tag",tagService.getTag(id));
        return "admin/tags_input";
    }

    @PostMapping("/tags/save")
    public String post(@Valid Tag tag, BindingResult result,
                       RedirectAttributes attributes,Model model){
        Tag tag1 = tagService.getTagByName(tag.getName());
        if (tag1 != null){
            result.rejectValue("name","nameError","标签不能重复");
        }
        if (result.hasErrors()){
            return "admin/tags_input";
        }
        Tag tag2 = tagService.saveTag(tag);
        if (tag2 == null){
            attributes.addFlashAttribute("message","恭喜，添加错误!");
        }else {
            attributes.addFlashAttribute("message","恭喜，添加成功!");
        }
        return "redirect:/admin/tags";
    }

    @PostMapping("/tags/save/{id}")
    public String tagPost(@Valid Tag tag, BindingResult result,
                       RedirectAttributes attributes,Model model){
        Tag tag3 = tagService.getTagByName(tag.getName());
        if (tag3 != null){
            result.rejectValue("name","nameError","标签不能重复");
        }
        if (result.hasErrors()){
            return "admin/tags_input";
        }
        Tag tag4 = tagService.saveTag(tag);
        if (tag4 == null){
            attributes.addFlashAttribute("message","恭喜，更新错误!");
        }else {
            attributes.addFlashAttribute("message","恭喜，更新成功!");
        }
        return "redirect:/admin/tags";
    }

    @GetMapping("/tags/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes){
        tagService.deleteTag(id);
        attributes.addFlashAttribute("message","恭喜，删除成功!");
        return "redirect:/admin/tags";
    }

}
